76 to 100 of 269 Performance Optimisation Jobs in the UK

well-established and growing e-commerce client is seeking a Junior Web Developer to support the ongoing development, maintenance, and optimisation of their online platforms. This is an excellent opportunity for a junior developer with hands-on experience across WordPress, WooCommerce, front-end development, and e-commerce technologies … security checks Troubleshoot website issues, bugs, and plugin conflicts Develop and implement small custom features using PHP, HTML, CSS, and JavaScript Support website performance optimisation and mobile responsiveness Assist with SEO improvements including metadata and on-page optimisation Work closely with marketing teams on landing pages ...

evolving complex software systems. The role would suit someone with strong Python development experience, ideally combined with exposure to C/C++ integration , performance improvement, refactoring, legacy system modernisation or engineering-heavy environments. You will work on technically challenging codebases where reliability, maintainability and engineering quality are critical. This … defects, incidents and technical issues, carrying out root cause analysis and implementing robust fixes Refactor and improve existing software to increase maintainability, reliability and performance Support architecture adaptation and evolution as system requirements change Work across Python-based systems, including integration with C/C++ components or bindings where ...

evolving complex software systems. The role would suit someone with strong Python development experience, ideally combined with exposure to C/C++ integration , performance improvement, refactoring, legacy system modernisation or engineering-heavy environments. You will work on technically challenging codebases where reliability, maintainability and engineering quality are critical. This … defects, incidents and technical issues, carrying out root cause analysis and implementing robust fixes Refactor and improve existing software to increase maintainability, reliability and performance Support architecture adaptation and evolution as system requirements change Work across Python-based systems, including integration with C/C++ components or bindings where ...

Spring Boot or J2EE Solid understanding of Spring Core (IoC and Dependency Injection) Strong experience with relational databases, schema design, complex queries, and performance optimisation Experience designing and implementing scalable RESTful APIs Hands-on experience building high-availability, high-concurrency systems at scale Strong understanding of Design Patterns … Detail-oriented, proactive, and able to work effectively under pressure What You Can Expect An empowered engineering culture Clear ownership and accountability A high-performance yet pragmatic working environment Continuous learning and professional growth The opportunity to build resilient systems that operate at real scale If you’re looking ...

proof-of-concept work, using modern Android engineering to solve complex real-world challenges. It would suit someone who wants to build secure, high-performance mobile applications in an environment where technical quality, innovation, and real-world impact genuinely matter. Benefits £65,000 - £85,000 basic salary Bonus Hybrid … code using modern Android practices including coroutines, Flow, and structured concurrency Integrating Android applications with REST APIs, backend services, and secure communications layers Supporting performance optimisation, battery efficiency, and memory usage improvements Participating in code reviews and helping drive engineering quality across the mobile estate Working closely with ...

product, QA, and design. - Drive improvements in engineering standards, tools, and processes. - Identify and reduce technical debt while supporting system modernisation efforts. - Ensure strong performance, scalability, security, and reliability across platforms. - Lead or contribute to technical initiatives spanning multiple systems. - Mentor team members and support knowledge sharing and hiring … understanding of distributed systems and cloud environments (AWS preferred). - Familiarity with CI/CD pipelines, automated testing, and modern delivery practices. - Experience with performance optimisation, debugging, and observability tools. - Exposure to legacy systems and modernisation projects is advantageous. - Knowledge of secure coding practices and common security standards. ...

product, QA, and design. - Drive improvements in engineering standards, tools, and processes. - Identify and reduce technical debt while supporting system modernisation efforts. - Ensure strong performance, scalability, security, and reliability across platforms. - Lead or contribute to technical initiatives spanning multiple systems. - Mentor team members and support knowledge sharing and hiring … understanding of distributed systems and cloud environments (AWS preferred). - Familiarity with CI/CD pipelines, automated testing, and modern delivery practices. - Experience with performance optimisation, debugging, and observability tools. - Exposure to legacy systems and modernisation projects is advantageous. - Knowledge of secure coding practices and common security standards. ...

development. You will work across both existing and new applications, contributing to software used daily in real operational environments where reliability, usability, and performance genuinely matter. This role may suit an experienced developer already operating at senior level, or a strong Java developer ready to step into greater technical … internationally. You will be involved in: Desktop application development using Java and Swing, with some JavaFX where appropriate Improving and maintaining large commercial codebases Performance optimisation and troubleshooting Designing intuitive desktop user interfaces Database integration using technologies such as MySQL and SQLite File processing, reporting, and data handling ...

experience selecting effective technical solutions. Excellent stakeholder engagement and customer service skills. Acts as an escalation point for complex issues and supports system performance monitoring. Collaborates with security, infrastructure, and service desk teams to deliver integrated solutions. Creates automation, maintains documentation, and contributes to team development. Participates in project … protection, and modern authentication methods (MFA, password-less, certificate based auth). -based auth). Extensive expertise in Windows client OS, including lifecycle management, performance optimisation, security configuration, and troubleshooting. Hands-on experience with Microsoft Defender for Endpoint and wider Defender suite integrations. Experience with identity lifecycle management ...

with SQL database schemas (tables, relationships, indexes, constraints), data modeling for robot/system telemetry (time-series and event data) and query and storage optimisation for real-time workloads (indexing, partitioning) Write clean, maintainable, and testable code aligned with team standards Contribute to code reviews and improve overall code … Rust, C, and Python Exposure to robotics systems, ROS, or C++ integrations Experience with multi-service or modular platforms (microservices, plugins, modules) Understanding of performance optimisation for real-time UIs (rendering, scheduling, profiling) Familiarity with modern frontend tooling and practices (Storybook, design systems/component libraries, state management ...

About the Role We are seeking a highly experienced E-commerce & Digital Marketing Specialist to take ownership of the development, management and ongoing optimisation of our ecommerce websites. This role combines hands-on website management with digital marketing strategy, ensuring the website is continuously maintained, improved and optimised … strategies to increase visibility, attract qualified traffic, and maximise conversions. The ideal candidate is both technical and commercially minded, capable of managing website performance, while ensuring data and digital marketing channels improve performance and revenue. Key Responsibilities SEO & Growth Strategy · Develop and implement ROI-focused SEO strategies across ...

looking for Strong SQL and Python skills, with hands-on experience in dbt, Databricks, Airflow or Looker Solid analytics engineering fundamentals — data modelling, warehousing, performance optimisation, observability and governance Experience in a marketplace or e-commerce environment, with comfort around metrics like GMV, conversion rates and retention Background ...

looking for Strong SQL and Python skills, with hands-on experience in dbt, Databricks, Airflow or Looker Solid analytics engineering fundamentals — data modelling, warehousing, performance optimisation, observability and governance Experience in a marketplace or e-commerce environment, with comfort around metrics like GMV, conversion rates and retention Background ...

Extensive hands-on experience designing, building, and optimising Snowflake solutions * Strong understanding of data warehousing, data modelling, ETL/ELT, governance, security, and performance optimisation * Experience working with AWS, Azure, or GCP environments * Excellent stakeholder engagement and communication skills * Ability to work independently within fast-paced consulting ...

technologies, computer vision, sensor integration, and intelligent automation Build robust, reliable, and high-performing software for real-world applications Participate in troubleshooting, debugging, and performance optimisation activities Contribute ideas for improving products, processes, and development approaches Support the delivery of software across desktop, embedded, or edge-based environments ...

leadership and mentoring across engineering teams Collaborate with clients to define data strategy and transformation roadmaps Establish best practices across governance, lineage, security and performance optimisation Support advanced analytics, AI and real-time data initiatives Work across multiple high-profile transformation programmes simultaneously Person We Are Looking ...

best practices for deployment, monitoring, scalability, and risk management Implement monitoring and evaluation frameworks for production AI environments, including hallucination detection, drift monitoring, performance optimisation, and GenAIOps processes Ensure AI solutions integrate effectively with existing systems, APIs, and data platforms Collaborate with senior stakeholders to evaluate business value ...

OpenAI, Bedrock), prompt orchestration, tool usage and interaction patterns. Expertise in AI system design including state management, memory strategies, evaluation approaches, guardrails, observability and performance optimisation for LLM-powered systems. Strong communication and influencing skills, with experience mentoring engineers and driving high standards across teams while engaging both ...

well as the functional when designing solutionso Actively participate in developing and managing agile backlogs of worko Support live services through monitoring, incident resolution, performance optimisation and continual improvement, including rota'd 3rd line supporto Share knowledge, mentor colleagues, and support the development of Microsoft platform capability within ...

dashboard-building role. You’ll be working on the underlying systems that make complex visualisations fast, accurate, and scalable. The challenges range from rendering performance and interaction design through to algorithms, graphics, API design, and numerical correctness. What you’ll be doing Designing and building core charting features used … developers around the world Working across rendering, interaction, animation, and visualisation infrastructure Solving performance-critical problems involving Canvas, SVG, and large datasets Improving correctness, precision, and usability across a sophisticated charting platform Designing APIs that are elegant, flexible, and easy for developers to adopt Taking features from initial concept ...

fund Structured professional development and training opportunities THE MANAGING SECURITY ENGINEER ROLE As a Managing Security Engineer, you will lead the design, deployment and optimisation of large-scale security monitoring platforms. You will work closely with cross functional engineering and security teams to ensure the right controls, tooling … processes are in place to protect critical systems and data. You will take ownership of detection engineering, SIEM platform performance and the full lifecycle of security detection content, ensuring security monitoring remains effective, scalable and reliable. Key responsibilities include: Acting SME on Splunk Enterprise Security platforms Designing and maintaining ...

fund Structured professional development and training opportunities THE MANAGING SECURITY ENGINEER ROLE As a Managing Security Engineer, you will lead the design, deployment and optimisation of large-scale security monitoring platforms. You will work closely with cross functional engineering and security teams to ensure the right controls, tooling … processes are in place to protect critical systems and data. You will take ownership of detection engineering, SIEM platform performance and the full lifecycle of security detection content, ensuring security monitoring remains effective, scalable and reliable. Key responsibilities include: Acting SME on Splunk Enterprise Security platforms Designing and maintaining ...

configure, and maintain Sybase ASE and Replication Server environments Perform upgrades, patching, migrations, and platform transitions (RHEL7/8 RHEL9) Monitor and optimise database performance, resolving bottlenecks, deadlocks, and query issues Manage backup, recovery, and high-availability/DR solutions Provide L2/L3 production support and assist development … documentation and compliance standards Participate in on-call support rotation Required Skills: 5+ years' Sybase DBA experience (ASE & Replication Server) Strong SQL tuning and performance optimisation expertise Experience supporting 24/7 production environments Solid Unix/Linux and scripting skills Strong troubleshooting, communication, and stakeholder management skills ...

with data engineers to ensure outputs follow dimensional modelling best practices Investigate and resolve data quality issues, ensuring outputs reconcile with source systems Improve performance across both SQL queries and Power BI models Essential Skills & Experience Strong hands-on experience with Microsoft Power BI, including DAX Experience using Power … star schemas Desirable Experience Experience with Azure Synapse or similar cloud data platforms Knowledge of Power Query (M language) Understanding of Power BI performance optimisation techniques Familiarity with Git and structured release or deployment processes If you have worked in Real-Estate companies that is a great nice ...

enabled capabilities across the mobile platform. In this role, you will: Lead the design, development, and maintenance of advanced iOS applications, ensuring high performance, quality, and responsiveness across Expedia Group’s product suite. Architect and implement robust, scalable system and API designs, including effective data modelling to support complex … maintainable iOS mobile architectures, leveraging common design patterns such as MVVM or VIPER Advanced proficiency in SwiftUI - Skilled in multi-threading, concurrency, and performance optimisation Prior experience in the search domain or travel industry, such as building or scaling search, discovery in consumer mobile apps. Experience establishing technical ...